Does the place of adultery prevent the angels from entering, and what is the method for purifying this place in order to pray there?

The occurrence of fornication does not defile a place, nor does it prevent angels from entering. If impurity is found, it is removed by pouring water, and nothing else is needed. This is in accordance with the Prophet's (peace be upon him) saying: "And the earth has been made for me a place of prostration and a means of purification. So, any man of my Ummah, wherever the time of prayer overtakes him, should pray." So, pray in this place and do not worry about the past sin committed therein.